Fix quickcheck tests so that they are not all discarded.
Fix quickcheck tests so that they are not all discarded.

Quickcheck favors lowish u64 values, so none were making the minimum and
all tests were being silently discarded, and therefore not discovering the
bug.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd,trgill/stratisd,mulkieran/stratisd,trgill/stratisd,mulkieran/stratisd